First Known Use: 1903
Dictionary
radiotherapy
noun ra·dio·ther·a·py \ˌrā-dē-ō-ˈther-ə-pē\
Definition of RADIOTHERAPY
: the treatment of disease with radiation (as X-rays)
— ra·dio·ther·a·pist \-pist\ noun
See radiotherapy defined for English-language learners
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Origin of RADIOTHERAPY
International Scientific Vocabulary
Medical Dictionary
radiotherapy
noun ra·dio·ther·a·py \ˌrād-ē-ō-ˈther-ə-pē\
plural ra·dio·ther·a·pies
Medical Definition of RADIOTHERAPY
: the treatment of disease by means of radiation (as X-rays)—called also radiation therapy, radium therapy; compare radiodiagnosis
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